Hi Kellie,
I am also Stage IV with the EFGR mutation. I started Tarceva about 4 months ago. I did get the rash on my face, shoulders and back but not as severely as yours. And the very, very dry skin. Here are the products that have worked really well for me. First, I apply a prescription cream from my oncologist - Aslometasone Dipropionate Cream USP , 0.05%. I spread it over patches or dot it on with a Q-tip where the spots are not close. This keeps the rash under control. Then I use a thin layer of Derma-E Pzorzema Creme which I use because the dryness was making me itch, regardless of how much cream I put on. Then I slather on a cream called Dry Skin Relief by Collective Wellbeing or Acure Calming Body Lotion. This may be enough for you. Since I'm in Chicago with the worst winter in decades, I then add a oil that seals everything - Goe Oil by Jao. The oil sinks in pretty well, but I do live in cotton leggings and undershirts under my clothing. The rash is an annoyance at this point, no more. Hope it stays that way.These products are available on-line or at Whole Foods-type of stores. I hope at least one of these helps. Oh, I forgot one thing that you probably already know -my oncologist did prescribe an antibiotic, Minocycline which I used for just a few weeks when the rash started to worsen. It did help and I stopped when the rash seemed to stabilize.
Peaceful thoughts,
Marlene